This page has an error. You might just need to refresh it.
Error in $A.getCallback() [i.contentWindow.addEventListener is not a function]
Callback failed: apex://GanttData_Custom_Controller/ACTION$getAllTask
Callback failed: apex://GanttData_Custom_Controller/ACTION$getAllTask
Failing descriptor: {c:GanttComp}

Hi,
as a rule, you’ll get a reply faster if you explain what you’ve tried to do (with code samples) and what didn’t work for you.

From I can tell right now, gantt may require enabling the content security policy extensions in order to work correctly in SalesForce. Other than that, I’m not aware of any specific approaches needed for salesforce integration

This page has an error. You might just need to refresh it.
Error in $A.getCallback() [i.contentWindow.addEventListener is not a function]
Callback failed: apex://GanttData_Custom_Controller/ACTION$getAllTask
Callback failed: apex://GanttData_Custom_Controller/ACTION$getAllTask
Failing descriptor: {c:GanttComp}